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During 2021 , a corporation had sales of $865,000. Cost of goods sold, administrative and selling expenses, and depreciation expenses were $535,000,$125,000, and $170,000, respectively. In addition, the company had an interest expense of $90,000 and a tax rate of 25 percent. (Ignore any tax loss carryforward provisions and assume interest expense is fully deductible.) What is the company's net income for 2021? a. b. What is its operating cash flow? c. Explain your results in parts (a) and (b)